Refrigerating apparatus



June 8, 1937. E. D. MISNER REFRIGERATING APPARATUS 2 Sheets-Sheet 1 Original Filed March 14, 1927 INVENTOR. [0619/9 fl fins/v54 IY MU (bn ATTORNEYJ June 8, 1937. E. D. MISNER REFRIGERATING APPARATUS Z-Sheets-Sheet 2 I N VEN TOR.

Original Filed March 14, 1927 [064? 17. ff/fi/Vf/P W5 MM \10 k ATTORNEYj Reissue d June 8, 1937 UNITED STATES vinator Corporation, tion of Michigan Original No.

18 Claims.

This invention relates generally to refrigerating apparatus of the domestic type and consists of certain novel features of construction, combinations and arrangements of parts as will be more 5 fully described and particularly pointed out in the appended claims.

In the accompanying drawings:

Figure 1 is a front elevation of a refrigerator cabinet and unit embodying my invention.

Figure 2 is a fragmentary end elevation thereof,

Figure 3 is a fragmentary vertical sectional view through the pan and showing the freezing unit mounted thereon. I J

Figure 4 is an enlarged fragmentary sectional 15 view through the pan and one of the shields.

Heretofore provision has been made at the upper ends of refrigerating cabinets or ice boxes to receive the brine tanks or freezing units of yarious types of refrigerating apparatus. In the 20 past such units have been constructed and arranged in such a way that the upper end or a certain corner of the cabinet could be cooled to a very low temperature. Usually the food compartments or chambers were located at a lower level 25 or at a point more or less remote from said unit,

hence the foods etc. were not cooled to such a low temperature. With the present invention however, the full benefits of the cooling or freezing unit are obtained in the food chambers for the 30 reason that the unit is located at a lower level. or more or less centrally in the cabinet and the food chambers or compartments are located upon opposite sides thereof in direct communication therewith.

Referring now to the drawings, l is a refrigerator cabinet, and 2 is a freezing unit of a refrigerating apparatus. As shown, the cabinet I is divided longitudinally into two chambers 3 and 4 respectively and is provided at the front thereof with the vertically spaced openings 5 and 6 and a series of louvers I. As shown, the openings 5 and 6 communicate with the upper chamber 4 while the louvers I serve as shields for suitable openings in communication with the lower chamber. Any suitable means such as the doors 8 and 9 respectively may be used to normally close the openings 5 and 6. In use, the marginal portion of the refrigerating apparatus such as a compressor, motor, condenser, etc. (not shown) is located in the lower chamber 3 of the cabinet while the freezing unit 2 of the apparatus is located in the upper chamber 4, preferably at a point in line with the lower edge of the upper opening 6. Thus ample space for foods etc. is provided both above 55 and below the unit "2. While I have shown only 20.402 REFRIGERATING APPARATUS Edgar D. Misner, Detroit, Mich., assignor to Kel- Detroit, Mich., a corpora- I,918,818, dated July 18, rial No. 175,358, March 14, October 27, 1932. Application for reissue 29, 1935, Serial No. 29,092

PATENT OFFICE Renewed June two shelves l and II respectively below and one shelf l2 above the unit 2, it will be apparent any number of such shelves may be used as may be found desirable for supporting the food. In any event the food chambers I3 and I4 are upon opposite sides of the unit 2 and are in direct communication therewith. As shown in the drawings, the shelf i2 is of the removable type and if desired said shelf may be removed and food articles may be placed on the top fiat wall of the freezing unit in case it is desired to cool said articles to lower temperatures than ordinarily when placed on shelf I2.

In the present instance the freezing or refrigerating unit 2 is preferably elongated in form and preferably has a series of transversely extending openings I for the reception of ice trays or pans and the like. Embedded in the body of heat conducting material l6 of the unit is suitable tubing I'I constituting the expansion coils of the refrigcrating apparatus. Preferably this tubing l1 extends longitudinally of the body and is terminally connected to transversely extending headers l8 and I9 respectively. Thus it will be noted that I have provided a substantially flat-like refrigerant evaporator or freezing unit which is horizontally disposed within the interior of the cabinet to divide the interior thereof into two substantially rectangular, vertically spaced food compartments wherein the temperatures will be relatively different. It will also be noted that the refrigerant pipes or duct means l'l extend laterally from the headers and with the aid of the body of heat conducting material form a freezing zone. Also, it will be noted that the pipes extend but slightly above and below the height of the headers.

Located directly below the unit 2 is a pan 20 that preferably rests upon a pair of horizontally spaced bars or brackets 2! that are terminally secured to the sides of the refrigerator cabinet. As shown, the pan 2!] is preferably dished inform and is adapted to receive any water dripping ordraining from the unit .2. To provide for circulation of air and at the same time prevent the escape of water into the lower chambers, the bottom of the pan is preferably provided with spaced openings 22 having upstanding marginal flanges 23, while covering said openings 22 are spaced inverted trough-shaped shields 24 which in turn are terminally secured, preferably by a welding operation, to the front and rear walls of the pan. If desired the welding operation may be dispensed with and suitable brackets 25 may be provided at the front and rear walls of the pan to support the shields 24. In this connection it will be noted that Thus, from the foregoing description it will be space for the insertion of a plurality of ice o readily apparent that I have provided a freezing making receptacles on the same horizontal plane unit that is constructed and arranged in such a substantially within the height of theheader.

' way in the refrigerating cabinet that relatively 8. A refrigerant evaporator for cooling cirlarge storage spaces for food are provided upon culatingair and for freezing substances, comprisopposite sides of and in direct communication ing a pair of elongated horizontal headers dis- 15 with the unit 2. Moreover provision has been posed on the same horizontal plane and duct substantially within the height of said headers. While it is believed that from the foregoing 9. Aflat-like refrigerant evaporator of the type description, the nature and advantage of my inadapted to be inserted in a cabinet for cooling vention will be readily apparent. I desire to have circulating air therein and having provisions for it understood that I do not limit myself to what freezing ice cubes comprising, a body of heat con-,

is herein shown and described and that such ducting material having a space for receiving an 25 changes may be' resorted to when desired as fall ice making receptacle, an e n ed header emwithin the scope of what is claimed.

WhatI claim as my invention is: embedded in said body and extending laterally 1. The combination with a refrigerator cabifrom the header above and below said space for net having a freezing chamber, of a freezing said receptacle.

v unit of a refrigerating apparatus in said chamb r, 10. A refrigerant evaporator for cooling circupan h r i th c bi t below s id u it lating air and for freezing substances, comprising to catch water dripping from said unit, the bottom a pair of spaced apart refrigerant headers disof said pan having an opening for air, and a posed in parallel relation on substantially the as shield for said opening secured to opposite walls same h rizontal plane and extending from a 3 of said pan and constituting a seat for said unit. point adjacent the front of the evaporator to a 2. The combination with a refrigerator cabipoint adjacent the rear of the evaporator, and renet having a freezing chamber, of a freezing frigerant duct means associated with and inter- 40 a pan anchored in the cabinet spaced from to provide passages for refrigerant in communi- 40 3. The combination with a refrigerator cabinet po on o said duct means and below said re- 45 of a refrigerating apparatus in said chamber. a n 8- refrlgerating apparatus, a cooling unit pan in said cabinet for catching water dripping including two spaced apart refrigerant headers from said unit, and means for supporting said pan p s d n substantially the same horizontal spaced from the side walls of the cabinet includp an a d t n n stantia ly from the front ing a bracket secured to said cabinet, and means o he a o the e apo a o and a coo in for supporting said unit upon said pan. and ice freezing means associated with said head- 4. The combination with a refrigerator cabinet, s an comp ising a continuous imperforate wall of a pan in said cabinet having spaced opemngs Structure associated w h n x n in below for air in its bottom, a support for said pan seand joining said headers, said wall structure be- 55 cured to said cabinet, shields for said openings 18 p ded Wi h hollow portions for refrigerant secured in spaced relation upon said pan, and a communicating with each of Said d s, D0 freezing unit of a refrigerating apparatus restticns of said wall structure being disposed in ing on said' shields. paced apart upright planes, and said wall strucg 5. Refrigerating apparatus comprising, in comture having p o is o s for upporting an ice g bination, a cabinet having two openings in the re zing-tray between said upright wall portions. 1 m; all thereof, a flat-like cooling element h 12- In a refrigerating apparatus, a cooling unit ing a. freezing chamber, said cooling element being including two spaced ap interconnecting said headers above said freezing tray.

13. In a refrigerating.apparatus, a cooling unit including two spaced apart refrigerant headers disposed on substantially the, same horizontal plane andextending to the rear of the evaporator, and air cooling and ice freezing means associated with said headers and comprising a continuous imperforate wall structure-associated with and extending below and Joining said headers, said wall structure being provided with hollow portions for-refrigerant communicating with each of said headers throughout substantially the entire length of said headers; portions of said wall structure being disposed in spaced apart upright planes, and said wall structure having provisions for supporting.

an ice freezing tray portions. l

l4. A refrigerant evaporator for cooling circulating airand for freezing substances, comprising a pair of spaced apart refrigerant headers disposed in parallel relation on substantially the same horizontal plane and extending at least a portion of the distance between the front and the rear of the evaporator, and air cooling and ice between said upright wall freezing means associated with said headers and comprising a continuous imperforate wall structurefextending below and joining said headers, said wall structure being provided with hollow portions for refrigerant below said headers in with each of said headers, a re.-

irigerant conduit interconnecting said headers,

and said wall structure having provisions for supporting a freezing tray between said wall struc- 'ture and said refrigerant conduit.

1'5. An evaporator for refrigerating machines including a flatupper surface for supporting arsubstantially from the front ticles to be frozen and a header extending along one edge of the evaporator, said evaporator having a plurality of passages extending from said header to the opposite side of said flat surface for the circulation of refrigerant therethrough and having a passage extending along the edge thereof communicating with the passages extending from said header.

' 16.. An evaporator for refrigerating apparatus comprising imperforate side walls having headers therein, a refrigerated lower wall, providing a flat support for article to be frozen, and a refrigerated wall immediately above said lower wall for providing anadditional flat surface for supporting articles to be frozen.

17. 'An evaporator for refrigerating. apparatus comprising imperforate side walls spaced apart in parallel relation and a header for refrigerant associated with each of said side walls, an imperforate bottom wall joined to each side wall and having a passage for refrigerant communic'ating with said' headers and a flat surface for supporting articles to be frozen, and an imperforate wall structure extending between said side walls and having a flat surface for supporting articles and a passage for refrigerant for cooling said articles.

18. An evaporator for refrigerating apparatus comprising imperforate side walls spaced apart in parallel ticles to be frozen, and an imperforate wall structure extending between said side walls and having a flat surface for supporting articles and a passage for refrigerant for cooling said articles.

EDGAR D. LHSNER. 

